Stampede MedallionEquipment 12
Source Pathfinder Secrets of Magic
Price 1,800 gp
Weight light
When you invest this medallion for your eidolon, it changes shape to appear as a tiny bejeweled facsimile of the eidolon, magically attached just over your eidolon's heart. While your eidolon wears the medallion, they gain a +2 item bonus to Athletics checks to Shove or Trip.
Activate 
envision
Frequency once per day
Effect Your eidolon Concentrates on the medallion and their connection to you, allowing them to momentarily manifest into a stampede of dozens of copies of themself. The stampede rampages out in every direction, swerving around your allies while trampling any foe on the ground in an emanation around your eidolon with a radius equal to your eidolon's Speed. Each of these foes takes 8d6 bludgeoning damage, with a DC 29 basic reflex save. On a critical failure, the foe is also knocked Prone. After dealing damage, the stampede of eidolons vanishes as quickly as it appeared.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
EidolonA creature with this trait is a summoner's eidolon. An item with this trait can be worn by an eidolon. An eidolon can have up to two items invested.
EvocationEffects and magic items with this trait are associated with the evocation school of magic, typically involving energy and elemental forces.
InvestedA character can wear only 10 magical items that have the invested trait. None of the magical effects of the item apply if the character hasn't invested it, nor can it be activated, though the character still gains any normal benefits from wearing the physical item (like a hat keeping rain off their head).
MagicalSomething with the magical trait is imbued with magical energies not tied to a specific tradition of magic. A magical item radiates a magic aura infused with its dominant school of magic. Some items or effects are closely tied to a particular tradition of magic. In these cases, the item has the arcane, divine, occult, or primal trait instead of the magical trait. Any of these traits indicate that the item is magical.